What are the chances of Sigma RAW Support?
Is there any chance that Aperture will support Sigma RAW file format?
iMac (27-inch Mid 2011), Mac OS X (10.7.4), i7 3.4GHz 16GB RAM
Good question since none of us work for Apple, and are simply a community of volunteers. You might consider posting to Apple's Aperture Feedback location. Just don't get your hopes up that they will respond to you and reveal future product planning.